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Patent Searching and Data


Title:
POWDER DUSTINESS EVALUATION METHOD AND POWDER DUSTINESS EVALUATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/191745
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a method that enables more precise evaluation of the dustiness of a powder. Provided is a powder dustiness evaluation method in which a powder to be evaluated is dropped onto a liquid contained in a box, which causes the powder to scatter as dust within the box, and the concentration of dust in the air within the box is measured by a dust measuring device. Also provided is a powder dustiness evaluation device comprising a box in which a liquid is contained, and a dust measuring device that measures the concentration of dust in the air within the box when a powder to be evaluated is dropped onto the liquid contained in the box and scatters as dust.

Inventors:
HORIUCHI Tatsuya (Shin-Tokyo Bldg., 3-1, Marunouchi 3-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
SUGANO Kenichi (Shin-Tokyo Bldg., 3-1, Marunouchi 3-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
Application Number:
JP2017/015308
Publication Date:
November 09, 2017
Filing Date:
April 14, 2017
Export Citation:
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Assignee:
YOSHINO GYPSUM CO., LTD. (Shin-Tokyo Bldg, 3-1 Marunouchi 3-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
International Classes:
G01N15/00
Foreign References:
JPH0283022A1990-03-23
JPS62212255A1987-09-18
JPH0290984A1990-03-30
Other References:
See also references of EP 3454040A4
Attorney, Agent or Firm:
KONDO Rieko et al. (Mitobe Building, 5th Floor 1-13-1, Kandaizumi-cho, Chiyoda-k, Tokyo 24, 〒1010024, JP)
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